Test Kennung:	1.3.6.1.4.1.25623.1.0.703828
Kategorie:	Debian Local Security Checks
Titel:	Debian Security Advisory DSA 3828-1 (dovecot - security update)
Zusammenfassung:	It was discovered that the Dovecot email server is vulnerable to a;denial of service attack. When the dict;passdb and userdb are used;for user authentication, the username sent by the IMAP/POP3 client is;sent through var_expand() to perform %variable expansion. Sending;specially crafted %variable fields could result in excessive memory;usage causing the process to crash (and restart).
Beschreibung:	Summary: It was discovered that the Dovecot email server is vulnerable to a denial of service attack. When the dict passdb and userdb are used for user authentication, the username sent by the IMAP/POP3 client is sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart). Affected Software/OS: dovecot on Debian Linux Solution: For the stable distribution (jessie), this problem has been fixed in version 1:2.2.13-12~ deb8u2. We recommend that you upgrade your dovecot packages. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Querverweis:	Common Vulnerability Exposure (CVE) ID: CVE-2017-2669 BugTraq ID: 97536 http://www.securityfocus.com/bid/97536 Debian Security Information: DSA-3828 (Google Search) https://www.debian.org/security/2017/dsa-3828 https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html http://www.openwall.com/lists/oss-security/2017/04/11/1
Copyright	Copyright (C) 2017 Greenbone Networks GmbH

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